The compact cutlery comes in fork, spoon or chopstick form, and each utensil features a detachable mini-spectrometer.

The spectrometer uses infrared waves to examine food's makeup, the inventors explain in an online video.

Because different types of food molecules vibrate in different ways, they each create a unique "optical signature," which the cutlery can recognize and use to identify what's in the meal, the teens say.

"Each food molecule vibrates in its own way to create the optical signature, and then you have to match it up to a database to see what type of food it is and if it's an allergen or not," Liu told CTV's News Channel on Tuesday.

Liu, a Grade 11 student at Vancouver's West Point Grey Academy, says she was inspired to create the product when she saw how friends and family struggled with allergies and infections caused by the bacteria Helicobacter pylori.

According to the Australia-based Helicobacter Foundation, Helicobacter pylori bacteria are believed to be transmitted orally, and can infect the stomach and lead to ulcers.

"We knew that there are Helicobacter pylori bacteria in the world and it's especially common in China, where it spreads through cutlery," Liu said on CTV News Channel on Tuesday. "We wanted to think of a way to prevent it before it spreads."

In North America, where the bacteria is less common, Liu says Culitech cutlery can be used to identify allergens and provide nutritional information.

"There is a need and this is the way, I think, of combating the issue," she said.

Liu and Wang took home the top prize when they unveiled their smart utensils at Startup Weekend Vancouver in November.

Now, they're working to create a final product and get it to market.

The technology is still in development, but Liu says she hopes that, one day, it'll be available for sale.

She and her partner envision customers buying their own personal sets of the cutlery, and bringing it with them when they eat out, in the same way that people with allergies keep an EpiPen on hand at all times.

After a meal, the spectrometer can detach from the spoon, fork, or chopsticks, to make it easier to clean the utensils.

"We think of it as a product that can be carried, either in the household or brought with you to a restaurant," she said.